Sleep is crucial for health. This is the only time when the body is able to repair the damages it has sustained during the day. Studies show that during sleep, a person enters into a state of paralysis so that the body – particularly the immune system – can repair and detoxify itself. This is the reason why people who get the required eight hours of sleep often feel refreshed during the day. There are many ways to get restful sleep and aside from doing relaxing habits before bedtime, supplements can also work wonders to help people achieve a good quality of sleep.